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55845807983 = 721682967723
BaseRepresentation
bin110100000000101010…
…110110011101101111
312100010222201222121122
4310000222312131233
51403333011323413
641353305251155
74014624351500
oct640052663557
9170128658548
1055845807983
1121758559119
12a9a6793abb
13535cbcc7c4
1429bac82ba7
1516bcbc1108
hexd00ab676f

55845807983 has 12 divisors (see below), whose sum is σ = 64968310440. Its totient is φ = 47864284272.

The previous prime is 55845807971. The next prime is 55845808013. The reversal of 55845807983 is 38970854855.

It is not a de Polignac number, because 55845807983 - 24 = 55845807967 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (55845807923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 790760 + ... + 858482.

It is an arithmetic number, because the mean of its divisors is an integer number (5414025870).

Almost surely, 255845807983 is an apocalyptic number.

55845807983 is a deficient number, since it is larger than the sum of its proper divisors (9122502457).

55845807983 is a wasteful number, since it uses less digits than its factorization.

55845807983 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84566 (or 84559 counting only the distinct ones).

The product of its (nonzero) digits is 48384000, while the sum is 62.

The spelling of 55845807983 in words is "fifty-five billion, eight hundred forty-five million, eight hundred seven thousand, nine hundred eighty-three".

Divisors: 1 7 49 16829 67723 117803 474061 824621 3318427 1139710367 7977972569 55845807983